Rotary fan-blower.



Patented .lune Il, |901.v

No. 676,322. H. B. KEIPER.

nor/uw FAN sLowen.

(Application led Oct. 6, 1899.) (No Model.)

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UNrTED STATES PATENT OFFICE.

HENRY n. KEIPER, or LANCASTER, PENNSYLVANIA.

ROTARY FAN-BLOWER.

SEEEGl-FIGATION forming part of Letters Patent N o. 676,322, dated June11, 1901.

Application filed October 6, 1899. Serial No. 732,763. (No model.) i

To all whom, it' muy concern:

Be itknown that I, HENRY B. KEIPER, a citizen of the United States,residing at Lancaster, in the county of Lancaster and State ofPennsylvania, have invented certain new and useful Improvements in theDriving-Gear of RotaryFan-Blowers; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled'in the art to which it appertains to make anduse the same.

This invention relates to improvements in blowers; and the primaryobject in view is to produce a simple, inexpensive, easy-running, andpractically noiseless machine adapted to be operated by manual or handpower and composed of few parts assembled in compact form and providedwith a screw-propelled mechanism adapted to impart a rapid rotary motionto the fan wheel or blades of a rotary blower, so as to produce apowerful blast with the least possible expenditure of power, the saiddriving mechanism and the bearings therefor being snugly housed toprevent contact therewith and "protect the same against the admission ofdust.

The invention comprises, essentially, a suitably-'journaleddriving-shaft carrying a fan- Wheel or rotary vanes or beaters andhaving a worm thereon and a worm-wheel engaging said worm for impartinga rotary motion thereto, together with means for imparting motion tosaid Worm-wheel, the said driving mechanism being snugly housed in aninclosing casing of peculiar construction and all the parts arranged incompact'form, so as to occupy but little space and provide an efcientrotary blower capable of producing a contin uous, regular, and powerfulblast with a rapid, easy-running, non-vibratory movement of the fan.

The invention will first be hereinafter more particularly described withreference to the accompanying drawings, which form a partof thisspecification, and then pointed out in the claims at the end ofthedescription.

In said drawings, in which similar letters of reference are used todenote similar parts in different views, Figure 1 represents a top orcasing, and parts of the machine being broken away; and Fig. 2 is avertical sectional elevation through the machinecasin g, the machinebeing turned end for end in respect to the position shown' in Fig. l.

In the drawings, the letter A denotes the housing or casing for thedriving mechanism of a rotary fan, which casing is made in two parts aa', fitted together and provided with suitable external lugs or ears, asa2 a3, hav-A ing registering apertures to receive the fastening-bolts bywhich the two parts of the casing are secured together, said casingbeing also formed integrally with a tubular portion A2, depending fromthe lower edge of the portion et and'having an opening a4 thereinbetween said parts for the engagement of the Worm-wheel and worm, to bepresently described. Said tubular portion is also provided `with adepressed portion or recess 0,5 for the reception of oil or otherlubricating material. As shown in the drawings, the casing is providedAwith an internal bearing-lug A3, integral with the portion a and havinga socketbearing a6, an external bearing-lug A4, integral with theportion a and having a bearing-v orifice a7, and an external lugA5,integral with the portion a and having an internal bearingsocket as, andan external bearing-lug A6, integral with the portion a and having aninternal bearing-socket a9, the bearings a6 and ai having a common axis,as also the bearings as and a9. The portion a of the casing at aprescribed point is provided on its forward edge with anintegrally-projecting lug or lugs A7, adapted to embrace a tube B andfitted between lugs c and c', projecting from the adjacent side of theblowen-casing C, through which a bolt c2, with its lower end vtappedinto said lug c', serves to secure the lVithin the tubular portion A2 ofthe casing IOO I cess d5 in said part A2.

4o paddle, Aor wing-wheel.

worm-wheel F, with worm-teeth on the pe and through a registeringaperture surrounded by a ring Iiange or boss'c6 in the adjacent side ofthe blowercasing and from Within said blower is closely fitted a tube D,having 5 at its inner end a surrounding ring Iiange d,

engaging against the boss c6, with screws d therethrough and tapped intosaid boss, serving to rigidly secure the two together, holding saidtubular portion A2 of the casing A m in place, while the tube D hasthrough its zo having therethrough a bearing-aperture for saidfan-shaft, and tubular sleeves e and e of Yprescribed dimensions arearranged between said bearing-blocks E E', as shown, the sleeve e beingbetween the worm C2 and block E and the sleeve e between the worm andblockpE'.

In the socket-bearing of the block E and through the bearing-aperture ofthe sleeve E is journaled the shaft'CS, having rigidly se- 3@ curedthereto in any approved manner or integr'al therewith a worm C2, withthe requisite number of screw-threads or worm-teeth of ythe requiredpitch and slope, the' sleeves e and e', engaging on the body of theshaft between said bearings and the worm, as shown,

serving to keep said worin rotatably in place, while to the forward endof said shaft within the` blower-casing is rigidly secured, as by aset-screw c7, the hub of any approved fan,

C2' denotes the inletaperture for the ingress of air and the dottedcircles Ytheposition of the outlet-nozzle C4.

In the socket-bearings d8 and a9, before menil/ned-,aare journaled thespindle ends of a aftf, having rigidly aflixed to its body in anyapproved manner the central hub of a riphery thereof engaging orintermeshing with the spiral ribs or teeth forming the worm 5o C2,before mentioned, while adjacent to said worin-wheel and having itscentral hub also rigidly aiiixed in any approved manner to the body ofsaid shaft is a pinion G, having inl its periphery the required numberof teeth intermeshing with the teeth on the vperiphery of-a spur-wheel Hof the required diameter and having its hub rigidlyrsecured to the bodyof a shaft h, with its one spindle end journaled in `the socket-bearinga6, before 6o mentioned, and its other end extending through andjournaled in the bearing-aperture a7, also before mentioned, said latterend outside of the casing being provided with a lever-arm H', having itshub rigidlysecured t0 said outer end in any approved manner,

whereby motion is given to the gearing and the fan rotated. A portionVof the'lever-arm is adapted to be readily separated or taken apart topermit the gearing to be removed and replaced, and, as will be seen, thewormwheel is arranged in the plane of the wormshaft on which the rotaryfan is secured and in close proximity to said fan, while the casing ofthe latter is secured to the gear-casing at an angle to the latter, thusbringing the fan and its driving-gearing into close proximity andhousing the same in compact form, so that the machine may occupy butvery little space. The machine thus constructed is simple, easy-running,and practically noiseless in operation, being actuated with a smallexpenditure of power exerted by a man 0r boy turning the crank-handle,secured tc the axis of the spur-wheel or driving-gear, engaging a pinionon the axis of the worm-wheel.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is

1. In a blower, a gear-casing having a communicating tubular pendentportion, a closeiitting tube in said pendent portion also communicatingwith said casing, a fan-casing secured to one end of said tube, a shaftworking in the tube and supporting a fan in the fan-casing, and a trainof gears in the gearcasing for operating said shaft, substantially asdescribed.

2. In a blower, a gear-casing havinga coinmunicating tubular pendentportion, a closeitting tube in said pendent portion having at one end aflange, and also communicating with said casing, a fan-casing secured tosaid iange, a shaft workingfin said tube and sup-y porting a fan in thefan-casing, and a train of gears in the gear-casing for operating saidshaft, substantially as described.

3. In a blower, a gear-casing provided with a communicating tubularpendent portion having bearing-blocks therein, a shaft supported in saidbearingblocks and having thereon a worm, sleeves on the shaft 'abuttingsaid bearing-blocks and the worm, and a train of gears in thegear-casing including a worm-wheel engaging said worin, substantially asdescribed.

4. In a blower, a gear-casing'provided with an integral communicatingtubular pendent portion having bearing-blocks therein, a fancasingsecured in place atone end of said pendent portion, a shaft supported insaid bearingblocks and having thereon a worm, said shaft supporting afan` in the fan-casing, sleeves on the shaft abutting the ends of theworm and the bearing-blocks, and atrain of gears in said gear-casingvincluding a worin-wheel engaging said worm, substantially as described.

5. In a blower, a gear-casing constructed in IOC IIO

two longitudinally-divided parts, one part having a communicatingtubular pendent portion with bearing-blocks therein, asimilarlyconstructed fan-casing secured in place at one end of saidpendent portion, a shaft supported in said bearing-blocks `and havingthereon a worm, said shaft supporting a fan in the fan-casing, sleeveson the shaft abutting between the said blocksand worm, and a train ofgears in said gear-casing including a worm-wheel engaging said worm,substantially as described.

G. In a blower, a gear-casing having a communicating tubular pendentportion formed with an oil-receptacle, a close-fitting tube in saidpendent portion also communicating with said casing, and with the saidoil-receptacle, a fan-casing secured to one end of said tube, a shaftworking in the tube andsupporting a fan in the said fan-casing, and atrain of gears in the gear-casing for operating said shaft,substantially as described.

7. In a blower, a gear-casing having acommuuicating tubular pendentportion formed with an oil-receptacle, a close-fitting tube in saidpendent portion also communicating with said casing, and withtheoil-receptacle, a fan-casing secured to one end of said tube,

a Worm-shaft in the tube supporting a fan in the fan-casing, and a trainof gears in the gear-casing including a worm-wheel engaging saidworm-shaft, substantially as described.

S. In a blower, a gear-casing constructed in two longitudinally dividedpart-s, one part having a communicating tubular pendent portion providedwith an oil-receptacle, a closefitting tube in said pendent portion alsocommunicating with the casing, and with the oilreceptacle, asimilarly-divided fan-casing secured to one end of said tube, aworm-shaft in the tube supporting a fan in the fan-casing, and a trainof gears in the gearcasing including a worin-wheel engaging saidwormshaft, substantially as described.

9. In a blower, a gear-casing having a communicating tubular pendentportion, a closetting tube in said pendent portion also communicatingwith said casing, bearing-blocks in the tube, a fan-casing secured toone end of said tube, a shaft supported in thebearingblocks and having aworm thereon, sleeves on the shaft abutting the bearing-blocks and theworm, and a train of gears in said gear-casing including a worm-wheelengaging said worm, s ubstautially as described.

l0. In a blower, a gear-casing constructed in two longitudinally-dividedparts, one part having a communicating tubular pendent portion, aclose-fitting tube in said pendent portion also communicating with saidcasing and having a flange at one end, a fan-casing secured to saidflange, bearing-blocks in the tube, a shaft supported in said blocks andhaving a worm thereon, sleeves on the shaft abutting said bearing-blocksand, the worm, and a train of gears in said gear-casing includingaworm-wheel for engaging said worin, substantially as described.

1l. In a blower, a gear-casing constructed in two longitudinally-dividedparts, one part having a communicating tubular pendent portion formedwith an oil-receptacle, a closeiittingtube in said pendent portion alsocommunicating with said casing, and with the said oil-receptacle, saidtube having a ilange at one end, a fan casing secured to said ange, andalso constructed in two parts, bearing-blocks in the tube, a shaftsupported by said blocks and having thereon a worm, sleeves on the shaftabutting the worm and said bearing-blocks, and a train of gears in saidgear-casing including a worm-wheel for engaging said worm, substantiallyas described.

12. In a blower, a gear-casing having a communicating tubular pendentportion, and constructed of two parts divided longitudinally, said partshaving coinciding internal and eX- ternal lugs, respectively, each lughaving abearing-socket, and said parts also having coinciding externallugs, each also having a bearing-socket, -a close fitting tube in saidpendent portion also communicating with said gear-casing and having aflange at one end, a fan-casing secured to said iiange, a shaft in saidtube supporting a fan in the fancasing, and a train of gears supportedin the bearing-sockets of said gear-casing and operating said shaft,substantially as described.

13.v In ablower, a gear-casing having a communicating tubular pendentportion and constructed of two parts divided longitudinally, said partshaving coinciding internal and eX- terual lugs, respectively, each lughaving a bearing-socket, and said parts also having coinciding externallugs each also having a bearing-socket, a close-fitting tube in saidpendent portion also communicating with the gear-casing, bearing-blocksin the tube, a fancasin g secured to one end of said tube, a shaft insaid bearing-blocks having thereon a worm and supporting a fan in thefan-easing, sleeves operating said shaft, substantially as described.

14E. In a blower, a gear-casing having lugs ata suitable point of theedge thereof adapted to embrace a tube, a fan-casing secured to saidgear-casing and having similar lugs on the outer side thereof, and alsohaving additional lugs overlapping those on the gearcasing, asupporting-tube passing about said fan-casing and confined between thelugs on the outer side thereof and those on the gearcasing, and meansfor securing said tube in place, substantially as described.

l5. In a blower, a gear-casing having lugs at a suitable point of theedge thereof adapted to embrace a tube, a fan-casing secured to saidgear-casing and having similar lugs IOS IIO

on the outer side thereof,- and also having additional lugs overlappingthose on the gearcasing, a supporting-tube passing about said fan-casingand confined betweenthe lugs on the outer side thereof and those on thegearcasing, and bolts for securing said tube in place, substantially asdescribed.

.16. In a blower, a gear-casing and a fancasing, the two beingconstructed with adja-v cent overlapping lugs adapted toembrace a tube,said fancasing being constructed on its opposite side also with lugs,and a supporting-tube .passing about said fan-casing and confined inplace between said lugs, substantially in the manner shown anddescribed.

17. In combination with the fan and its inclosing casing, thegear-casing formed in two longitudinally-divided parts removably securedtogether and to said fan-casing; one of said parts having a tubularportion to receive the bearings in which the fan-driving shaft isjournaled; said tubular portion having an `said shaft and train of gearsare coperatively arranged and housed in compact form, substantially asdescribed. V

In testimony whereof I atix` my signature in presence of two Witnesses.

HENRY B. KEIPER. lVitnesses: Y

CHAsfE. LONG, JOHN B. HoUGH.

